Cannot get ipconfig to renew

One of our users downloaded a screen saver and lost her internet connection. In IP config, she had a strange IP address (not on our network). I did and ipconfig /release, but when I went to renew I got this error:
Windows IP Configuration - An error occurred while renewing interface Local Area Connection: the requested service provider could not be loaded or initalized.
I have never seen this type of message before. I gave her a static ip, subnet mask, default gateway and DNS and it seemed happy, but still would not connect to the network.

Try reinstalling driver for the network interface card. If it does not help either then try restoring your system to prior dates before installation ("System Restore") . That would be the easy way around.

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Note If the service pack version of the operating system that you want to install is higher than the service pack version of the CD-ROM operating system that you own, integrate the service pack that you want into the Windows XP installation folder. For more information about how to integrate Windows XP Service Pack 2 files into the Windows XP installation folder, click the following article number to view the article in the Microsoft Knowledge Base:
900871 (http://support.microsoft.com/kb/900871/) How to integrate Windows XP Service Pack 2 files into the Windows XP installation folder
On the Welcome to Microsoft Windows XP page, click Install Windows XP.
On the Welcome to Windows Setup page, click Upgrade (Recommended) in the Installation Type box (if it is not already selected), and then click Next.
On the License Agreement page, click I accept this agreement, and then click Next.
On the Your Product Key page, type the 25-character product key in the Product key boxes, and then click Next.
On the Get Updated Setup Files page, select the option that you want, and then click Next.
Follow the instructions that appear on the screen to reinstall Windows XP.